Perhaps you should try some spelling variations:
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
optimized algorithmss » optimized algorithm, optimizer algorithms
optimized algorithms » optimized algorithm, optimizer algorithms, optimization algorithms
sphere estimation » pose estimation
same » some

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( same ((optimized algorithmss) or (optimized algorithms)) ) or ( sphere estimation algorithms ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( same ((optimized algorithmss) OR (optimized algorithms)) ) OR ( sphere estimation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (( same ((optimized algorithmss) or (optimized algorithms)) ) or ( sphere estimation algorithms ))*.